Greetings,
I am only 125 miles from the Gulf coast, average humidity: 80% most of
the time that seems like a low number. The idea actually originated
with a charter member of the Houston Renewable Energy Group. The limit
he found was that it will destroy a shingle roof, metal or some other
durable roof is required. His original experiment that was using grid
power and city water, save the homeowner about 40% net on his electric
bill. By that I mean that after he paid the increase in his water bill,
he was still around 40% less money out of pocket for his electric.
As you have stated, insulation in the ceiling is the most important. We
have opted to use a cool roof instead. The sun can't heat the roof as
the water carries the heat away with it. The water is then collected
and used for the gardens, so at the end of the day, I have used almost
no extra water for my cooling.
Put a piece of hot metal in water, it cools. Put water on metal, it
cools. My sprinklers actually run for 12 minutes total most of the time
in a day, unless the temperature are hitting triple digits, then I do
opt to run them more so I use 30 minutes worth of sprinkling for the
day. This is not a high water usage.
Pictures and technical descriptions are on HREG@yahoo.com home page.
A couple of people are using solar pumps and recirculated water on their
buildings and are working on controls that run by temperature, not time.
All of this, down here on the Gulf Coast in our high humidity.
Bright Blessings,
Kim
slurryguy wrote:
> Why are you sorry? Disagree with me all you want. We all can learn
> from a friendly respectful debate. Especially me!
>
> I think you'll admit that your sprinkers are an unusual exception.
> I'm glad they work so well for you. Of course that sprinkler system
> works best in a low humidity climate. Higher humidity levels will
> inhibit the evaporative cooling that is taking place.
>
> One also needs to have a reasonably plentiful water supply. Many of
> the arid climates where evaporative cooling can work best also have
> very limited water supplies for the exact same reason. Many of our
> deep aquifers are reaching their limits. The once mighty Colorado
> River dries up before it reaches the ocean. The resivoirs are also
> low. Water supplies are getting more and more precious.
>
> In the right situation though, your solution is down right
> ingenious. I like it.
>
> Any pictures?
>
>
>
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